Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88174307496aabd…

MALICIOUS

PDF

51.0 KB Created: 2020-08-04 10:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76092db15920b00fac3a5e6a3619586f SHA-1: 90ad2b14df33e66e2bd7f020c4d1dba320923979 SHA-256: f88174307496aabd8cc6ee1da185c88215a7e0028438c8f504d55382fa3d0659
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=synonyms+and+antonyms+books+for+competitive+exams+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains hosting PDF files. No scripts were extracted from this sample, but the presence of the malicious redirector and the link farm structure strongly suggest a phishing or malware distribution attempt.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=synonyms+and+antonyms+books+for+competitive+exams+pdf
    • http://files.rebaspizza.com/uploads/1/3/1/6/131636825/ligosavoxozatarona.pdf
    • http://files.courthouseclassic.com/uploads/1/3/0/7/130775144/zedanasegusono-ziriguso-xetakexajur.pdf
    • http://files.dyslexiaonlongislandny.org/uploads/1/3/1/8/131858592/gezife.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/70635053811.pdf
    • https://cdn.shopify.com/s/files/1/0438/1674/7170/files/jeppesen_private_pilot_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/nuropujuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/53469376192.pdf
    • https://cdn.shopify.com/s/files/1/0435/4595/2408/files/learn_english_speaking_fluently.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/borarawigapemu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/49181888817.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/84395574901.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2952/files/walixinepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/tazabetufeninapilubo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/59741126988.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/bewamexej.pdf
    • https://cdn.shopify.com/s/files/1/0437/3400/7973/files/12329466539.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/bewam

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bb4.bin
928f7002cdac5f61cc2c24fe1a8ac207a4d881ff8f856cdf2481d7f9f59ec30a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB4 5592 bytes
font_01_sfnt_off00008ea3.bin
cc4d771c4e7b9d1dc58784c10f6600800ce544e88f75c6cbd0eb4486cf1853e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA3 10012 bytes
font_02_sfnt_off0000b0dd.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DD 4324 bytes